The Mitsui Memorial Museum (三井記念美術館, Mitsui Kinen Bijutsukan) is an art museum in Tokyo's Nihonbashi district.

It is located within the Mitsui Main Building, an Important Cultural Property as designated by the Japanese government.

The museum's collection includes items used in the Japanese tea ceremony as well as Eastern antiques.

[1] The museum houses more than 4,000 cultural objects, six of which have been designated by the Japanese government as National Treasures, 75 as Important Cultural Properties, and 4 as Important Art Objects (ja).

[2] The museum also publishes a number of books about its collections.